Raman spectroscopyCeO2PrO2The present paper reports the phase progression in nano-crystalline oxides PrO2 and CeO2 up to pressures of 49GPa and 35GPa, respectively, investigated via in situ Raman spectroscopy at room temperature. The samples were characterized at ambient conditions using X-ray ...
Visualization of subnanometric phonon modes in a plasmonic nano-cavity via ambient tip-enhanced Raman spectroscopyPhonons provide information on the physicochemical properties of a crystalline lattice from the material's vibrational spectrum. Optical phonons, in particular, can be probed at both micrometre...
In this study, we present comprehensive angle-resolved polarized and temperature-dependent Raman spectroscopy measurements conducted on single crystals of MnPSe3, with the aid of group theory analysis and first-principles calculations. All of the experimentally observed Raman modes are systematically ...
For example, in the Pm3m simple cubic perovskite, the polar F1u modes are active both in IR and HRS, while the "silent" F2u mode is active only in HRS. Here we mostly exploit the fact that hyper-Raman technique combines advantage of infrared spectroscopy to probe the polar modes ...
Raman phonon spectroscopy in the 10–150 cm 1 shift range was used to study the phase transition in an o -aminobenzoic acid crystal (II). At 77 K, twelve distinct phonon modes are observed whereas at 300 K the spectrum shows ten phonon bands. The temperature dependence of the phonon frequ...
Journal of Raman SpectroscopyBerweger S, Raschke MB (2009) Polar phonon mode selection rules in tip-enhanced Raman scattering. J Raman Spectrosc 40:1413–1419Berweger S, Raschke MB. Polar phonon mode selection rules in tip-enhanced Raman scattering. J Raman Spectrosc 2009;40:1413-9....
Raman phonon spectroscopy in the 10–150 cm1 shift range was used to study the phase transition in an o-aminobenzoic acid crystal (II). At 77 K, twelve distinct phonon modes are observed whereas at 300 K the spectrum shows ten phonon bands. The temperature dependence of the phonon ...
the phonon spectra evolve rapidly owing to ultra-strong coupling between different phonon modes and atomic reconstructions of the moiré pattern. We develop a low-energy continuum model for phonons that overcomes the outstanding challenge of calculating the properties of large moiré supercells and succe...
摘要: Raman and infrared spectroscopy of Cu 关键词: High-J<inf>c</inf> Long coherence length Low anisotropy Raman and infrared phonon modes Superconductors Thin films of Cu<inf>1-x</inf>Tl <inf>x</inf>Ba<inf>2</inf>Ca<inf>3</inf>Cu<inf>4</inf>O<inf>12-y</inf> ...
Moreover, due to phonon dispersion in the frequency range corresponding to the overtone (or the combination tone), a rather complicated structure can arise, depending on the phonon dispersion of the pair of modes forming the combination tone. In the KS structure, as shown in Table1, which inc...